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CUD-Traffic-AI / CHANGELOG.md

Rajeev Ranjan Pandey

docs: add CHANGELOG.md documenting all v1.1.0 UI and backend changes

5378bb9 about 2 months ago

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Changelog

All notable changes to the TrafficIntel — LLMs for Traffic Incident Summarization project are documented here.

Added LiveMetrics.jsx — a new right-column card showing ROUGE-1 bar charts for all four models (BART, Flan-T5, PEGASUS, TextRank) sourced from the experiment corpus (n = 200).
The currently selected model is highlighted in orange with an animated gradient bar and an "active" badge.
A 4-metric grid (R-1, R-2, R-L, CR) updates live as the user switches models.
A green delta indicator shows ROUGE-1 gain over the TextRank baseline (e.g. +35.8% for BART).
Each metric now has a bullet-point description below explaining what it measures.

Renamed from "Batch Processing" / "Evaluation Data Loader" → "Load Your Dataset" for clarity.
File format guidance simplified: .csv only · max 50 MB displayed inline in the drop zone.
Clear reference to the required Incident Description column in the helper text.

Renamed section header from "Analysis Dataset" → "Available Datasets".
Replaced Database icon with BrainCircuit (ML-themed) icon rendered in orange.
Full light/dark mode support with proper hover states and contrast.

Per-model directive prompts injected before incident text to force genuine rewriting:
- BART-large-CNN: instructed to report only location, type, severity, and road impact briefly.
- Flan-T5-small: instructed to produce a one-sentence summary under 35 words.
- PEGASUS: given a compact-sentence summarization directive.
Dynamic token cap: max_new_tokens capped at 50% of raw input token count, preventing verbatim echoing of short incidents.
length_penalty raised to 3.0 — strongly penalises long outputs and promotes compression.
no_repeat_ngram_size raised to 4 — blocks 4-gram phrase copying from the source text.
num_beams reduced from 4 → 2 for ~40% faster inference with minimal quality loss.

Root page background (Home.jsx): bg-[#060d1f] → bg-slate-50 dark:bg-[#060d1f].
Navbar: white background in light, all text/icon colours use dark: variants.
SummarizerWidget card, input/output panes, model cards, buttons: full dark: pairing.
Dataset Preview (Home.jsx): bg-[#0d1326] → bg-white dark:bg-[#0d1326].
DatasetToggle, BatchUpload, LiveMetrics: all hardcoded dark colours replaced.
Hero stat chips: wrapped in bg-slate-100 dark:bg-white/5 cards; value text text-slate-900 dark:text-white.
Model card names, Speed label, speed bars: all light-mode-safe.
Copy & Save buttons: bg-slate-100 text-slate-700 in light, bg-white/8 text-white in dark.

Info i badge: border-2 (thicker), always visible at text-slate-500, glows text-orange-600 on hover.
Tooltip: bg-white border-slate-200 text-slate-700 in light / bg-slate-800 text-slate-300 in dark.

Input textarea and output paragraph: both use text-lg leading-[1.85] — larger and breathable.
Removed artificial min-h/max-h constraints on the output pane that created dead whitespace.
Textarea uses fixed rows={5} to eliminate empty space when content is short.

"CUD · AAI Midterm Project" badge moved from hero → below the TrafficIntel logo in the navbar (less cluttered hero).
All card borders tightened: border-slate-200 → border-slate-300 dark:border-white/[0.07] for better definition.
A border-t separator added between hero and the 3-column grid for clean visual rhythm.
Dataset Preview shows 5 severity-stratified samples (one per severity level: High → Medium → Critical → Low) instead of simply the top-5 rows, so the preview always shows a meaningful, diverse range.

File	Change
`src/models/abstractive.py`	Per-model prompts, dynamic token cap, stronger length penalty
`config.yaml`	`num_beams: 4→2`, `max_new_tokens: 96→72`
`backend/main.py`	Severity-stratified `/samples` endpoint, `_safe_int` helper
`frontend/src/pages/Home.jsx`	Full light mode, stat cards, CUD badge moved, dataset preview border
`frontend/src/components/SummarizerWidget.jsx`	Light mode, text size, info icon, tooltip
`frontend/src/components/DatasetToggle.jsx`	Renamed, BrainCircuit icon, light mode
`frontend/src/components/BatchUpload.jsx`	Renamed, cleaned up, light mode
`frontend/src/components/LiveMetrics.jsx`	New component — live ROUGE scores
`frontend/src/index.css`	Dark theme tokens, Inter font, custom scrollbar, grid background

⚠️ Backend restart required after pulling to activate the new generation parameters and prompt changes.